Convert Chain (US Survey) (ch (US)) to Earth's Equatorial Radius (R⊕) instantly.
Chain (US Survey) to Earth's Equatorial Radius conversion
1 Chain (US Survey) (ch (US)) = 0.0000031540194 Earth's Equatorial Radius (R⊕). To convert Chain (US Survey) to Earth's Equatorial Radius, multiply the value by 0.0000031540194.
| Chain (US Survey) (ch (US)) | Earth's Equatorial Radius (R⊕) |
|---|---|
| 1 | 0.0000031540194 |
| 2 | 0.0000063080388 |
| 5 | 0.000015770097 |
| 10 | 0.000031540194 |
| 25 | 0.000078850484 |
| 50 | 0.00015770097 |
| 100 | 0.00031540194 |
| 1000 | 0.0031540194 |
Frequently asked questions
How many Earth's Equatorial Radius are in one Chain (US Survey)?
One Chain (US Survey) (ch (US)) equals 0.0000031540194 Earth's Equatorial Radius (R⊕).
How do I convert Chain (US Survey) to Earth's Equatorial Radius?
To convert Chain (US Survey) to Earth's Equatorial Radius, multiply the value by 0.0000031540194.
What is 10 Chain (US Survey) in Earth's Equatorial Radius?
10 Chain (US Survey) = 0.000031540194 Earth's Equatorial Radius.
About these units
Chain (US Survey) (ch (US))
The US Survey Chain is defined as 66 US Survey Feet (~20.1168 meters), aligning with the historic Gunter's chain but adapted to the US survey foot. It is used primarily in cadastral surveys, property delineation, and historical land records. Surveyors employ the chain for practical measurements of fields, lots, and infrastructure layouts. The unit's subdivision into 100 links simplifies area calculation, as 10 square chains equal one acre, maintaining continuity with older surveying systems. Even today, engineers and surveyors working with legacy data encounter the US survey chain in historical deeds, maps, and legal descriptions. Its precision ensures consistency when reconciling pre-modern measurements with modern coordinates.
Earth's Equatorial Radius (R⊕)
The Earth's equatorial radius is approximately 6,378.1 km. This distance represents the radius measured along the equator, where Earth's rotational bulge makes it slightly larger than the polar radius. Geodesists, cartographers, and astronomers use the equatorial radius for mapping, satellite positioning, and calculating gravitational effects. It is fundamental to defining the shape of the Earth as an oblate spheroid rather than a perfect sphere. Precise knowledge of R⊕ enables accurate navigation, climate modeling, and orbital calculations, forming the basis for modern geodesy and Earth observation systems.